Somali Pirates

About every week there is in the news mention of Somali Pirates taking over or attacking shipping off the Somali coast. I thought that piracy was universally condemned and that all countries were bound by agreement to act against it. So far little is being done it seems for the attacks continue. What to do about it?

The attacks on shipping must be by boat, right? Why not then blast every boat over the size of a row boat to smithereens along the Somali coast; particularly those coastal regions from which most of the attacks are coming from?

A second method would be to use Q-boats like that used against German U-Boats during WWII. Q-Boats were armed boats disguised as merchant ships. When a U-Boat surfaced to sink the ship the "merchant ship" transformed into a gun boat as covers were thrown back to reveal naval artillery. Surprise!

The third less desirable course would be to arm every merchant ship that sailed pass Somalia. Not a very practicable solution.

So far I haven't heard any mention of doing anything about the Somali pirates, except after a ship was already hijacked; I wonder why?